Comparison of the Quality Characteristics and Aroma of M. Longissimus from Korean Native Black Pigs and Modem Genotype Pigs during Vacuum Packaged-Chilling

재래종 및 개량종 돼지 등심의 진공포장 냉장중 품질특성 및 향기비교

  • Kang, Sun-Moon (Department of Animal Products and Food Science, Kangwon National University) ;
  • Lee, Sung-Ki (Department of Animal Products and Food Science, Kangwon National University)
  • 강선문 (강원대학교 동물식품응용과학과) ;
  • 이성기 (강원대학교 동물식품응용과학과)
  • Published : 2007.06.28

Abstract

This study compared the quality characteristics, including aroma, of M. longissimus from five Korean native black barrows(64 kg, KNP) and five modem genotype barrows($Landrace{\times}Yorkshire{\times}Duroc$, 114 kg, MGP), during vacuum packaged-chilling. The samples were vacuum packaged, stored at $2{\pm}0.3^{\circ}C$ for 12 days, and then subjected to quality measurement. The KNP had higher fat content than did MGP(p<0.05), but KNP contained lower C14:0, C18:3 and C20:5 concentrations than did MGP(p<0.05). The KNP showed lower pH values(p<0.05) and water-holding capacities than did MGP, and were redder in color than MGP during storage. The TBARS increased more quickly in KNP than in MGP samples during storage. In texture, KNP showed firmer muscle tone than did MGP during storage(p<0.05). Various aroma compounds including 3-methyl-l-butanol, 2-ethyl hexanol and m-xylene were detected with SPME-GC/MS after 12 days of storage, and aroma patterns of KNP and MGP, obtained with an electronic nose, differed during storage.

본 연구는 재래종 및 개량종 돼지 등심의 일반 품질특성 과 SPME-GC/MS 및 전자코에 의한 신선육의 향기를 진공 포장 냉장저장중 비교하고자 실시하였다. 평균 출하체중 64 kg의 재래종 돼지(거세돈) 5두와 114 kg인 개량종 돼지($Landrace{\times}Yorkshire{\times}Duroc$, 거세돈) 5두를 도축하고 등심(M. longissimus) 부위를 진공포장한 다음 $2{\pm}0.3^{\circ}C$에서 12일 동안 저장하면서 품질을 분석하였다. 지방 함량은 재래종이 개량종보다 높았던 반면(p<0.05), 지방산 조성중 C14:0, C18:3, C20:5 함량은 개량종보다 낮았다(p<0.05). 저장기간동안 재래종의 pH와 보수력 모두 개량종보다 낮았으며(p<0.05), 표면육색은 재래종이 저장기간 동안 개량종보다 붉고 진하였다. TBARS 는 재래종에서 더 빨리 촉진되었으며, 조직감은 재래종이 저장기간 동안 개량종보다 단단하였다. SPME-GC/MS 및 전자코에 의해 저장 12일에 두 품종 간 hexanoic acid, 3-methyl-1-butanol, 2-ethyl hexanol, m-xylene의 성분 및 저장기간 동안 패턴 차이가 분별되었다.

Keywords

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